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If a number appears in a row, column, or subgrid more than once, those instances are given the same color. boston globe sudokuadvanced sudoku solving strategies Utilize "X-Wing" and "Swordfish" techniques to eliminate numbers in larger areas of the grid. sudoku tips expert With its simple yet intricate design, Sudoku challenges players to fill a 9x9 grid with numbers while adhering to specific rules. MSN Sudoku offers a variety of difficulty levels, catering to both beginners and seasoned Sudoku solvers. sudoku books
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